I am unable to open your forming tool part, it tells me "future version". But I was able to open your handle part. I am on SW2104. If you approached the forming tool the same way I tried at first then you ended up with a body that look something like this:
The problem here is that the model had a couple small radii that are problematic when turning into a form tool. The radius of any concave fillets needs to be at least the sheet metal thickness. So I think these are the problem spots:
I'll try to make an example that does work.